Deep fryer



FIG. 1 is a front view of a deep fryer showing my new design;

FIG. 2 is a right view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a left view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a front perspective view thereof; and,

FIG. 7 is a back perspective view thereof.

The broken lines shown in the drawings are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a deep fryer, as shown and described. 